ImageGallery errors

I installed the dataobjectmanager and uploadify modules, but i seem to be having issues with imagegallery.

after ive created a new image gallery, i use the "add images to default album" button to upload images. after that's done (100% bar, etc), no images are showing up in the photos tab. however, if i go to the files and images tab it shows that the files have been uploaded (image gallery->image gallery->default album)

also, when i go to the image gallery on the published site, it shows 0 images, and clicking on said album throws this error